A new ultraviolet blocking agent and a cosmetic product having a high ultraviolet blocking action. The inventors have found that the extract obtained from branches of olive has a high effect of absorbing ultraviolet, in particular UV-A and UV-B and has a high ultraviolet absorbing action, and completed. The ultraviolet blocking agent contains an extract of branches of olive. The branches of olive may be bark of olive. The ultraviolet blocking agent may be in the form of a cosmetic product.